Updated from global requirements

Change-Id: I7eb0c7740f63e2c63ad3540bfc2a3df4650215b4
diff --git a/test-requirements.txt b/test-requirements.txt
index 9f37a05..90882be 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,5 +4,5 @@
 
 # Hacking already pins down pep8, pyflakes and flake8
 hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
-openstackdocstheme>=1.17.0 # Apache-2.0
+openstackdocstheme>=1.18.1 # Apache-2.0
 sphinx!=1.6.6,>=1.6.2 # BSD